From the Research
Definition of HACOR Score
The HACOR score is a rating scale that takes into account several clinical and laboratory parameters, including:
Components of HACOR Score
The HACOR score is calculated based on the following components:
- Heart rate: measured in beats per minute
- Acidosis: assessed by pH levels
- Consciousness: assessed by Glasgow coma score
- Oxygenation: measured by PaO2/FiO2 ratio
- Respiratory rate: measured in breaths per minute 2, 3, 4
Prediction of Clinical Outcomes
The HACOR score has been used to predict adverse clinical outcomes in patients with various respiratory conditions, including:
- COVID-19-related acute respiratory failure
- Chronic obstructive pulmonary disease (COPD) with pulmonary encephalopathy
- Acute-on-chronic respiratory failure in non-COPD patients
- Acute hypoxemic respiratory failure 1, 2, 3, 4
Cutoff Values and Predictive Power
Different studies have reported various cutoff values for the HACOR score, including:
5 for predicting in-hospital death or need for intubation in COVID-19 patients
10.5 for predicting non-invasive ventilation failure in COPD patients with pulmonary encephalopathy
6 for predicting high-flow nasal oxygen failure in patients with acute hypoxemic respiratory failure 1, 2, 4
Clinical Utility
The HACOR score has been shown to be a clinically useful tool for predicting the need for intubation and mortality in patients with respiratory failure, and can help identify patients who are likely to respond to non-invasive ventilation. 3, 5